Example: I want to preview a postcard with the front and back slightly overlapping. These are two print files with bleeds in the print file. However, in the preview, the bleed should be hidden, the original trimmed size should be displayed, and a shadow should also be placed, which of course won't be printed later.

This should allow the customer to make adjustments (text and image), sometimes synchronously, on the front and back.

Due to the overlap, there is currently no way to accomplish this.

Another example is a book that only shows the cover with a shadow in the preview. However, the print file also includes the cover, the spine, and the back cover. If a poster is also included as a second file in the preview, slightly overlapping below the cover, masks are also required in steps 2/3.

If I'm wrong or have missed something, please correct me :)